Re: [Tracker] Using older glib in tracker

[Philip Van Hoof <philip codeminded be>]

On Tue, 2013-01-29 at 11:01 +0100, Marcin Mielniczuk wrote:

Hi,

> I was asking whether it is possible to use GLib 2.20 or 2.22 to build
> Tracker 0.10+ instead of Glib 2.28+ to build

ok

> The problem is that glib upgrade is not that easy. There are some
> closed source packages which segfault with glib 2.29 for example.

That means that your closed source packages probably have a serious bug.

Of course can't the Tracker project take into account bugs of closed
source packages. You'll have to workaround this (you can install a
specific version of GLib in a directory and use LD_LIBRARY_PATH).

My advice for such a situation is to use such a workaround anyway, as
you can't block yourself from upgrading GLib forever and yet your closed
source packages will always have to work with that specific GLib
version. So you'll need LD_LIBRARY_PATH.

For example:

o. Install old GLib 2.20 in /opt/myclosedapp
o. Install MyClosedApplication in /opt/myclosedapp
o. mv /opt/myclosedapp/bin/myclosedapp /opt/myclosedapp/bin/myclosedapp.orig
o. cat > /opt/myclosedapp/bin/myclosedapp <<EOF
   LD_LIBRARY_PATH=/opt/myclosedapp/lib /opt/myclosedapp/bin/myclosedapp.orig
   EOF
o. chmod +x /opt/myclosedapp/bin/myclosedapp
o. Install latest GLib in /usr (with packages)
o. Install Tracker in /usr (with packages)

Your myclosedapp.orig should now use GLib 2.20.

Kind regards,

Philip

> 2013/1/29 Philip Van Hoof <philip codeminded be>
>         Hi Marcin,
>         
>         I'm assuming you meant to ask whether it is possible to use
>         GLib 2.20 or
>         2.22 to build Tracker 0.10 instead of Tracker 2.20/2.22 to
>         build.
>         
>         If the configure.ac script requests a specific version, then
>         that
>         version is the oldest version that you can use.
>         
>         Up until last year was Tracker using a lot of very recent
>         additions and
>         improvements to GLib. Using a lower version than the one
>         requested by
>         configure.ac will therefor not work (not without patching and
>         working
>         around not having the feature for which the version in
>         configure.ac got
>         bumped - which the team generally doesn't / didn't do without
>         reason).
>         
>         For most systems an upgrade of GLib should not be any problem.
>         GLib is
>         maintained rigidly and upgrades of GLib are generally
>         considered safe.
>         
>         Kind regards,
>         
>         Philip
>         
>         On Thu, 2013-01-24 at 16:55 +0100, Marcin Mielniczuk wrote:
>         > Hi,
>         >
>         >
>         > Is it possible to use tracker 2.20 (or 2.22) to build
>         tracker 0.10 or
>         > newer?
>         >
>         >
>         > Regards,
>         > --
>         > Marcin
>         
>         > _______________________________________________
>         > tracker-list mailing list
>         > tracker-list gnome org
>         > https://mail.gnome.org/mailman/listinfo/tracker-list
>         
>         --
>         Philip Van Hoof
>         Software developer
>         Codeminded BVBA - http://codeminded.be
>         

-- 
Philip Van Hoof
Software developer
Codeminded BVBA - http://codeminded.be